Silencer



Patented July 11, 1950 UNITED STATES 'PATENT OFFICE SILENCER Earl HenryFundom, Kenton, Ohio Application February 16, 1948, Serial No. 8,595

1 Claim. 1.

This invention relates to improvements in silencers or mufflers.

An object of the invention is to provide an improved silencer or mufilerfor the exhaust from an internal combustion engine.

Another object of the invention is to provide an improved internalcombustion engine exhaust silencer or muflier which will include acylindrical body having an inlet and outlet, with a plurality oflongitudinally spaced transversely extending ported baflle platessupported in said body, whereby the explosions from the engine will beefficiently and eiiectively silenced and mufiled.

A further object of the invention is to provide an improved internalcombustion engine exhaust silencer or muiller having an inlet at one endand an outlet at the other end, with a plurality of transverselyextending longitudinally spaced bafile plates having aligned portsformed therein for efficiently and efiectively silencing and mufiiingthe engine exhaust, and said body being provided with a series of radiallongitudinally extending cooling fins secured to the exterior surface ofsaid body.

Another object of the invention is to provide an improved silencer ormuffler for an internal combustion engine which will be highly emcientin operation, and relatively inexpensive to manuiacture and produce.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts, hereinafter more fully describedand pointed out in the claim, it being understood that changes may bemade in the construction and arrangement of parts without departing fromthe spirit of the invention a claimed.

Referring to the drawing:

Figure 1 is a longitudinal vertical sectional view through the improvedexhaust silencer or mufller.

Figure 2 is a, transverse sectional view through the improved exhaustsilencer or muffler.

Like characters of reference are used throughout the followingspecification and the accompanying drawing to designate correspondingparts.

In carrying out the invention, there is provided an improved exhaustsilencer or muffler for an internal combustion engine including anelongated tubular body i having a plurality of radial longitudinallyextending cooling fins 2 2 formed exteriorly of and integrally with thebody I.

The inlet end of the silencer or mufiler body I is closed by an integralend member 3, which supports the integral inlet pipe 4, and which inturn telescopically receives the end of the exhaust pipe 5 connectedwith the internal combus-ion engine exhaust manifold (not shown). Thepipes 4 and 5 are secured in fixed position by means of the arcuatesemi-circular clamping bands 3 and "I and securing bolts 8 and 9extending through the opposite ends thereof.

An internal stop flange II] will be formed in the body I adjacent itsinlet end, and a plurality of apertured baffle plates II of circularshape and of the same diameter or the interior diameter of the body Iwill be supported in longitudinally spaced relation in the body I, theinnermost baffle plate II seating against the stop flange Iil, and theother baiiie plates being separated a uniform distance by means of theseries of spacer rings I2. The oil-center openings I3 in the bafileplates II will be arranged in Iongitudinal alignment with each other andwith the inlet pipe 4.

The outlet from the silencer body I will consist of an outlet endclosure I4, suitably secured in the end of the body I, and an outletpipe I5 will be formed integrally with the end closure I4 and will be inlongitudinal alignment with the openings IS in the bafile plates II. Theoutlet pipe l5 will be curved downwardly, as clearly shown in Figure 1of the drawing.

In operation, the silencer inlet pipe i is attached to the exhaust pipe5 from the intake manifold of an internal combustion engine (not shown),and the exhaust gas passes into the silencer body I, and expands throughthe openings I3 in the baffie plates II to fill the space between theplates ll, thereby mufiling the noise of the exhaust.

While the preferred embodiment of the instant invention has beenillustrated and described, it will be understood that it is not intendedto limit the scope of the invention thereto, as many minor changes indetail of construc tion may be resorted to without departure from thespirit of the invention.

What is claimed is:

A silencer comprising an elongated cylindrical tubular body integrallyformed with a closed end having an inlet opening in its marginal portionand spaced wholly from the axis of said body, said body being formedwith an annular stop flange spaced a substantial distance from 3 saidclosed end, a plurality of thin flat circular baflle plates fitted intosaid body, each baflle plate having an opening registering with andco-extensive in diameter with the inlet opening, annular spacer ringsfitted into said body and alternating with the baffle plates to spacesaid baffle plates longitudinally of the body, said rings respectivelybeing of a thickness corresponding to the thickness of the baflleplates, and an outlet end wall having an outlet opening coextensive indiameter and registering with the inlet and baflle plate openings, saidstop flange and outer end wall adapted to hold the baffle plates andrings in position within the body.

4 REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 734,864 Heaslet July 28, 1903958,934 Maxim May 24, 1910 1,631,391 Williams June '7, 1927 10 1,634,000Smith June 28, 1927 2,375,617 Bourne May 8, 1945 EARL HENRY FUNDOM. 15

